Choose Solids Over Patterned Garments:
Try to keep it as simple as possible, regarding the style and design of your garments. Just think about how patterns seem to draw the focus of your headshot away from your face, which can defeat the purpose of the photo. But if you still want to include a pattern, avoid particular patterns, such as plaids and big checks because they can draw attention to themselves instead of your face.
Consider Your Profession or Brand:
Another huge consideration is your profession or brand and the image you wish to portray. This means wearing the colors and clothing that best represent your business’s personality and how you need to present yourself.
For instance, if you’re a business professional or an attorney, you’ll probably need more businesslike attire, such as a suit and tie. Realtors may need to choose business clothing but maybe not quite as formal. If you’re a carpenter, then it’s a good idea to dress in your work clothes.
Other Considerations & Warnings:
Consider your hair color, eye color, complexion and backdrop, besides the type of feeling you need to project in your headshot.
Don’t wear clothing with a logo or writing on it, unless it's your company's logo.
Avoid clothing that is tight or large as this can be obvious in your headshot.
Usually, darker colors convey maturity, while brighter ones express a more youthful look.